NS3 Implementation

Network simulation is a computational procedure that involves the modelling of a computer network through the identification, analysis, and quantification of the interactions among different network devices and software. Mathematical modelling is employed as a means to examine the dynamics of a computer network, as opposed to relying on empirical data. Engaging in this activity has numerous benefits. Simulators are highly effective for evaluating network behaviour in harsh settings. Take, for instance, a node (a term used in network simulation to describe a computer system) that has the ability to move inside a wireless network. The behaviour of a node with high velocity can be readily examined through the utilisation of a simulator. Achieving high velocity for mobile nodes in a physical network poses significant challenges, and manipulating the velocity of mobile nodes for analytical purposes is a laborious and arduous endeavour.

Simulation emerges as the preferred approach in scenarios where the network exhibits a substantial number of nodes. For instance, while examining the functioning of a network of 1000 nodes, simulation emerges as the optimal approach, particularly until a definitive understanding of the outcomes is attained. Simulators are a viable option for doing network analysis in situations when financial resources are constrained, time is limited, or there is uncertainty over the efficacy of a given approach or protocol.

NS3 is a framework for creating basic programming models with the C++ language. It’s a discrete event packet simulator. Our research thesis program, NS3, is primarily intended for PhD students and research experts. We develop varied study projects for PhD students through Thesis. Our focus was on the creation and execution of unique network concepts that met the specific needs of users. We create theses and carry out networking projects using simulations like NS3, which are then simulated and tested. We used many theses including various unique protocols and methods to detect and avoid assaults using NS3 simulation. A large number of research-based applications have been developed using modern technology, including the use of simulation models.

-NS-3 is a collection of libraries that may be integrated and utilized with other software libraries. Certain simulation platforms provide users with a uniform graphical user interface environment in which all tasks are completed, whereas ns-3 takes a more modular approach in this regard. ns-3 can work with a variety of external animators and tools for data processing and visualization. Nonetheless, it is expected that users will do command line operations and use C++ and/or Python software development tools.

-NS-3 is primarily used on Linux systems, but it also supports FreeBSD and Cygwin (for Windows), and is being developed for native Windows Visual Studio.

A network simulator is a software application utilised to replicate the functionality of a real-world network on a single computer through the creation of scripts in C++ or Python. Typically, when doing experiments, we aim to observe the functioning of our network by manipulating different parameters. We lack the necessary quantity of computers and routers to create various topologies. Despite the availability of these resources, the construction of such a network for experimental purposes incurs significant costs. In order to address these limitations, we employed NS3, a discrete event network simulator designed for Internet applications.

NS3 facilitates the creation of diverse virtual nodes, which are analogous to physical computers. By utilising a range of Helper classes, NS3 enables the deployment of devices, internet stacks, applications, and other components onto these nodes. NS3 facilitates the establishment of Point-to-Point, Wireless, CSMA, and other types of connections between nodes. A Point-to-Point connection is equivalent to a Local Area Network (LAN) that connects two computers.

A wireless connection is analogous to a WiFi connection that facilitates communication between several computers and routers. CSMA connections are equivalent to bus topologies for interconnecting computers. Upon establishing connections, we proceed to deploy Network Interface Cards (NICs) on each node in order to provide network connectivity. Upon activating network cards in devices, many factors are incorporated into the channels, such as data-rate and packet size, which determine the actual path utilised for transmitting data. Currently, apps are employed to generate network traffic and transmit packets through these applications. Ns3 provides us with unique functionalities that can be applied to practical integrations.